Christopher McDougall

author of Born to Run and Natural Born Heroes

Check out the Flying Half-Centenarian

Flea is nearly 50 years old. He’s been a Red Hot Chili Pepper since high school. Not to make any presumptions about his past, but that means he’s been living the life of a rock star for three decades. Yet after taking up running 6 months ago, he looks sensational. Moves pretty damn fast, too: